#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2023, OpenNebula Project, OpenNebula Systems                #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

# ------------ Set up the environment to source common tools ------------

if [ -z "${ONE_LOCATION}" ]; then
    LIB_LOCATION=/usr/lib/one
else
    LIB_LOCATION=$ONE_LOCATION/lib
fi

. $LIB_LOCATION/sh/scripts_common.sh

DRIVER_PATH=$(dirname $0)
source ${DRIVER_PATH}/../libfs.sh

# -------- Get datastore arguments from OpenNebula core ------------

DRV_ACTION=`cat -`
ID=$1

XPATH="${DRIVER_PATH}/../xpath.rb -b $DRV_ACTION"

unset i XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <($XPATH /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/RSYNC_HOST \
                /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/RSYNC_USER \
                /DS_DRIVER_ACTION_DATA/DATASTORE/BASE_PATH)

unset i

RSYNC_HOST="${XPATH_ELEMENTS[i++]}"
RSYNC_USER="${XPATH_ELEMENTS[i++]}"
BASE_PATH="${XPATH_ELEMENTS[i++]}"

DF=$(ssh $RSYNC_USER@$RSYNC_HOST "mkdir -p '$BASE_PATH/' && df -PBM '$BASE_PATH/'" | tail -1)
#/dev/sda1              20469M 2983M    17487M      15% /
TOTAL=$(echo $DF | awk '{print $2}')
USED=$(echo $DF | awk '{print $3}')
FREE=$(echo $DF | awk '{print $4}')

echo "USED_MB=$USED"
echo "TOTAL_MB=$TOTAL"
echo "FREE_MB=$FREE"
